Finding the Third Proportional to 550,435.50 and 842,067

Step by Step Solution

1. Step 1: Write the proportion equation
   550,435.50 : 842,067 = 842,067 : x
2. Step 2: Convert to fraction form
   550,435.50/842,067 = 842,067/x
3. Step 3: Cross multiply
   550,435.50x = 842,067 × 842,067
4. Step 4: Simplify right side
   550,435.50x = 709,076,832,489
5. Step 5: Solve for x
   x = 709,076,832,489/550,435.50
6. Step 6: Final answer
   x = 1,288,210.58